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Investigating spectroscopy and forward model improvements for atmospheric retrieval of methane in the thermal infrared

The aim of this study was to explore and consolidate the possible sources of methane (CH4) biases in retrievals from thermal infrared (TIR) sensors, to establish necessary actions and perform the related work for mitigating biases. The study distinguisged three types of error sources: spectroscopic knowledge and input data to radiative transfer models (RTM), forward model errors, and instrument biases.

For achieving this goal, the study addresses three main objectives, corresponding to three identified tasks:

France

15/029

SPASCIA
SIROCCO - Synergetic SWIR and IR retrievals of near-surface concentrations of CH4 and CO for Earth and Planetary atmospheres

The SIROCCO study was performed under ESA guidance by a consortium led by NOVELTIS and including four partners: ULB (Belgium), IASB-BIRA (Belgium), SRON (Netherlands) and IAPS (Italy). The goal of the study was to review in a multidisciplinary context (Earth Observation and Planetary Science) the status of existing retrieval algorithms and to extend their capabilities when applied to remote sensing data collected (or to be collected in the near future) by instruments in orbit around the planets Earth and Mars, with atmospheric carbon monoxide (CO) and methane (CH4) as specific targets.

France

67

NOVELTIS

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